Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [scaling]

50 questions
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Converting/scaling a voltage range ([0v - 5v] to [-5v - +5v])

Can anyone explain how one would convert one voltage range to another? I'm going to need to convert a range of 0 to +5 volts into a range of -5 to +5 volts. How would this be accomplished? Thanks!
Greg
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Simple DC voltage scaling with two ranges, lower range voltage limited

I am attempting to monitor DC voltages that can range from 0 to 250V with a micro controller. A simple voltage divider should be suitable for the broad range up to 250V, with somewhat coarse resolution. A second voltage divider for when the voltage…
Tim Martin
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DC voltage 48 - 58 V to 0 - 10 V scaling

I have four 12 V lead-acid batteries in series and want to measure the total voltage. I'm interested in the 48 to 58 V range. How can I convert the range to represent it with a 0 - 10 V volt meter? The setup is fixed, the voltmeter is a bar graph…
ThomasDr
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Auto scaling in a multimeter

I’m trying to create a multimeter. I’ll be mainly using a 16 bit ADC (ADS1115), an ESP8266 on Node MCU. I’ll use the MCU to communicate with a phone app to switch between different multimeter modes, i.e. NOT using a physical switch, however I…
Noor Eldeen Salah Abdullah
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How to scale and shift voltage signal?

I want to scale and shift my voltage signal by below relation: $$ V_{out} = \frac {10} {12} \cdot V_{in} - 10 $$ Indeed my primary voltage is from 0v to 24v and I want to put it from -10v to +10v. I try to use the below circuit but its gain is…
Pana
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Why is BJT scaling not as significant as MOSFET scaling?

When reading about integrated circuits, MOSFET scaling comes up very often, however BJT scaling is never discusses. What's the reason for this?
Phaptitude
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Why are printed circuit boards so low-scale compared to integrated circuits?

Firstly, by low-scale I mean the sense of very-large-scale-integration, so the question is: Why are there so few and such thick wires on a typical PC printed circuit board, compared to the (orders of magnitude) smaller and more numerous connections…
user56834
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How can I do two points scaling in electronics? 0.6 V - 3.2 V to 0.0 V - 3.3 V

I'm seeking a solution how to do a two point scaling in electronics. I have tried an Op-amp, but it did not work very well. So I wonder if you have some ideas how to do two point scaling from e.g 0.6 V - 3.2 V to 0.0 V - 3.3 V? When I apply 4 mA, I…
euraad
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What is the shortest possible *channel length* in a currently available commercial CMOS process?

I'm aware that terms like "5 nm", "7 nm" for the latest technology nodes no longer refer to any linear dimension of the transistors, although I have seen some interpretations in terms of pitch. My understanding is that the names are arbitrary and…
knzy
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arduino thermal anemometer

I've been trying to use my arduino as a thermal anemometer based on the excellent and tiny IST FS5 "thermal mass flow sensor" - there is more information and a datasheet here - http://uk.farnell.com/ist/fs5-0-1l-195/sensor-flow-gas/dp/1778049. I've…
hornblower
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What is a ‘dense integrated circuit’ or ‘integrated function’ and how does it relates to Area in Moore’s law?

I am very comfortable with the usage of the Moore's law and its impact on microelectronics. However I had always associated Moore's law to the gate length scaling as a factor of square root of 2 every two year. (This then leads to a related…
Jonathan
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Eagle printed PCB scale problem

I have made a layout using eagle then save it as PDF to print a test paper before routing. I didn't design any package its all eagle's packages. I exported PDF as shown on the image but the problem is : the atmega16 and l293d and even ne555…
Mohamed Allam
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Combined ADC level shift/offset and scaling

I'm trying to sense the voltage from a 2 cell Li-ion battery that has a usable range from 2.5 to 4.4 Volts per cell (nominal 3.0 - 4.2 V). The ADC I have has a range from 0 - 1.8 V and is 12 bits. I haven't been able to devise a solution that makes…
Mr. Anderson
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16 Hall-Effect Linear Sensors to Analog Muxer to an Op amp scaler to ADC

I am planning out a midi controller because not enough of those exist. Down to my inexperience please point out some gotcha I may be missing. The short version of what I am doing. Basically 16 hall sensors connected to an analog multiplexing board.…
Audo Voice
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scaling a voltage down using op amp

I have already looked and found similar things but still couldn't solve my own problem. I have an input voltage of 9V to 11V and I want to scale it to 0V to 5V. It's better if it is linear but it's not an obligation. I have tried using an inverter…
Ege Korkan
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